Effect of post annealing treatment on electrochromic properties of spray deposited niobium oxide thin films

• Published in: Electrochimica acta 2007-04, Vol.52 (15), p.4899-4906
• Main Authors: Mujawar, S.H., Inamdar, A.I., Betty, C.A., Ganesan, V., Patil, P.S.
• Format: Article
• Language: English
• Subjects: Atomic force microscopy (AFM); Chemistry; Electrochemistry; Exact sciences and technology; General and physical chemistry; Miscellaneous (electroosmosis, electrophoresis, electrochromism, electrocrystallization, ...); Niobium oxide thin films; Scanning electron microscopy (SEM); Spray pyrolysis technique; X-ray diffraction (XRD)
• ISSN: 0013-4686; 1873-3859
• DOI: 10.1016/j.electacta.2007.01.054

Niobium oxide thin films were deposited on the glass and fluorine doped tin oxide (FTO) coated glass substrates using simple and inexpensive spray pyrolysis technique. During deposition of the films various process parameters like nozzle to substrate distance, spray rate, concentration of sprayed solution were optimized to obtain well adherent and transparent films. The films prepared were further annealed and effect of post annealing on the structural, morphological, optical and electrochromic properties was studied. Structural and morphological characterizations of the films were carried out using scanning electron microscopy, atomic force microscopy and X-ray diffraction techniques. Electrochemical properties of the niobium oxide thin films were studied by using cyclic-voltammetry, chronoamperometry and chronocoulometry.